I go to modern jazz gigs at least weekly - more often depending what’s on. It’s a 46 mile round trip to get there, but worth the effort.
Classical (orchestral) - nothing last season, but a couple of concerts in each of the previous two. I’m intending to pick up on these again in the coming season (from October).
Folk - I’ve been to a few Cambridge festivals over the years, the last five between 2009-2014. Not planning to do any more, for a couple of reasons, one of which is that although it’s always been a broad church, I’m now quite turned off by who they include in the line-up in a festival that’s supposed to have its roots in folk. I still watch out for one-off folk gigs, e.g. 2 last year, but none since (other than an evening of floor spots).
Rock - not for me any more. As Tony L says, too loud and wanting to preserve what’s left of my hearing. In 1980, I had a backstage entry to a gig from one of the road crew (a relation) and standing to the side, off-stage, with my left ear to a stage monitor (part of the sound mixing) I incurred hearing damage. Afterwards hearing slightly off in that ear and I now have tinnitus (mostly I can block it out). Should have got the hell out of there, but being young/daft and seeing for the first (and only) time a band performance a few yards away from the side of the stage, I stuck it out to the end.
Other - one-offs e.g. Gryphon (out of nostalgia!) last year, and Mor Kabasi this year. A friend and I keep an eye open for anything of interest - he goes to more of these than me.